Suction supporting device.



C. A. AUSTIN. SUCTION SUPPORTING DEVICE.

APPLIcATIoH FILED HAY 11. 1909.

952,495, Patented Mar.22, 1910.

CHARLES A. AUSTIN oF NEW Yonx, N. Y.

sUcTIoN SUPPORTING DEVICE.

To all whom it may concern:

Be it known that I, CHARLES A. AUSTIN, citizen of the United States,residing at New York city, in the county of New York and State of NewYork, have invented certain new and useful Improvements in SuctionSupporting Devices, of which the following is a specilication.

The object of this invention is a simple, durable and efficientconstruction of suction device, designed particularly for use in sustaining a shaving mirror on a window pane or similar sustaining surface,and also applicable for a great variety of uses suoli as holdingarticles in windows and show cases for display purposes or for holdingadvertising cards, signs, etc.

t The invention consists essentially in a sustaining device of thischaracter which embodies a suction cup of rubber or similar flexiblematerial, a stein secured to said cup, and a substantially rigid cap orbacking designed to be adjus'tably held on ysaid stem so as to workthereon over or toward the suc tion cup, so as to press the rigid capagainst the sustaining surface and increase the artial vacuum within thesuction cup,funti the said backing rests firmly against the sus-vtaining surfac, thereby giving the supporting stem which is secured tothe cup a rigidity which will enable it to carry considerable weightWithout sagging. And the invention also consists incertain arrangementsand combinations'of the parts that I shall hereinafter fully describeand claim.

For a full understandin of the invention and the merits thereof,andtalso to acquire a knowledge of the details of construction, and themeans for effecting the result, reference is to be had to the followingdescription and accompanying drawings, in which:

Figure 1 is a pers Jective view showing the adaptation of my evice to ashaving' mirror; Fig. 2 is a. sectional view of the operative portion ofthe device showing the saine in an operative relation to the sustainingsurface; and Fig. 3 is a similar view illustrating the parts preparatoryto producing a partial vacuum within the c a which s ustains the mirroror other artic e in the desired position.

. Corresponding and like parts are referred to in the followingdescription and indicated in all the views ofthe accompanying drawings,by the same 'reference characters. Referring to thefdrawings the numeral1 Specification of Letters Patent.

Application led Hay 17, 1,909. Serial No. 496,461.

Paten ted designates a suction cu of rubber, leather, or similarmaterial, an 2 designates a relatively small threaded pin which ismolded or otherwise secured in the cup 1 at the apex thereof.` The )in 2is designed to be screwed into a socket ornied in one end of anexterioi'ly threaded supporting stem 3, which is secured in any desiredway to the part to be suspended, such'as a mirror 4, as by a ball andsocket joint connection, 5;

A substantially rigid cap or backing 6 of substantially semi-sphericalshape, said ca being preferably formed of metal, altlioug i notnecessarily thus formed, is provided at its apex with an opening, thewalls of which are preferablyy formed with an outwardly and inwardlyextending sleeve 7, so as to reinforce the backing. This sleeve 7 isinteriorly threaded to-screw upon the supporting stem 3, as clearlyillustratedin the drawing, and preferably the backing 6 is Mal. 22,1910.

of a size to'entirely inclose the cup edge when screwed downwardly onthe stem 3 to the operative position illustrated in Fig. 2.

' From the foregoing description in connection with the accompanyingdrawing, the operation of i my improved suction device will be apparent.

In the practical vuse of the device the cup l is placed against a paneof glass or other sustaining surface and distended, and the backing orcap 6 is then .screwed down on the stem until it rests firmly againstthe sustaining surface, as illustrated in Fig. 2 thus giving thesuspending stem 3 such rigidity as to enable it to carry considerableweight without sagging and holding the mirror or other part in suspendedcondition by means of the partial vacuum formed within the cup.'

It is to be understood that my invention is not limited in any way tothe articular use illustrated in the accompanying drawing, nor to theexact construction, arrange-` ment, and proportions of the artshereinbefore described and illustrate as various changes may be madewithout departin from the scope of the invention as define in the apended claims.

Prefera ly, the cap l is detachabl secured to the stem 3 as by thethreade pin and socket connection'shown thus making the suction cupeasily replaceable when worn out, while the rest of the structure willlast comparatively indefinitely.

ico

It is of course to be understood that in the preferred application ofthe device, the suction cup is to be moistened on the inside, as thiswill tend to increase the length of time in which the cup will adhere tothe sustaining surface.

Having thus described the invention, what is claimed as nevi7 is:

1. A suction device, comprising a suction supporting cup, a supportingstem secured to said cup, and a rigid backing adjustably mounted on saidstem.

2. A suction device, comprising a suction supporting cup, a threadedsupporting stem secured to sald cup, and a, rigid backing screwing onsaid stem and arranged in one position to inclose the cup in thedistended condition of the latter.

3. A suction device, comprising a suction Supporting cup, a supportingstem havin a detachable connection with said cup, an a rigid backingadjustably mounted on said stem.

4. A suction device, comprising a suction supporting cup, a threaded(pin secured to seid cup,`an exteriorly threa ed supportin stem formedwith a socket to receive sai pin, and a rigid backin formed with anopening and an interior y threaded sleeve defining said opening, saidsleeve being arranged to screw on said stem as and for the purposes setforth.

5. A suction device, designed. to sustain an article from a supportingsurface byv u partial vacuum, the same comprising a suction supportingcup, a supporting Stem secured to said cup and a` relatively rigid`backing adjust-ably mounted on said stem and arranged in one positionto directly engage with the sustaining surface in the distendedcondition of the cup.`

In testlmon whereof I afhx' my signature 1n presence o two witnesses.

R. C. AUSTIN, \V. D. l-lANmuonF..

